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What is the terminal velocity of a falling cricket ball and how high would it need to be hit in order to reach that velocity?
Wiki User
∙ 12y ago
As an avid experimenter and paraglider pilot the question of how fast an object reaches terminal velocity has been tested a few times by our fellow pilots.
In fact one 'person' actually hollowed out a cricket ball and installed a miniture vario to record the 'flight curve'.
The ball was re-weighted to allow for the hollowed out section so it was the same as an un holled ball.
Air density was 1013-1011 during the half hour flight.
Altitude dropped from was 2000ft above field.
Max speed came out at a little over 35m/s ( about 80mph).
Interestingly the speed did vary 3 or 4 mph during the terminal velocity period.
We put that down to the ball turning and the seam presenting itself in different angles to the air flow and changing the Cd. (also it was an oldish slightly scuffed ball, so maybe a new polished one may travel a few mph faster)
Thats the closest I get to cricket !
Hope this info is of use to some of the out fielders.
Im off to find another cloud.
Wiki User
∙ 12y ago
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Gravitational force and the force of friction (the friction of the object and the air).
The point at which an object is falling at the fastest it can go is called its velocity?
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Terminal velocity is when air drag stops you from going any faster when falling. A heavier person will fall with greater force than the light sky diver falls at. So the heavier skydiver will require more force from air in order to keep him/her at terminal velocity
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When the gravitational and drag forces on the object are equal, there is no net force acting on the object. This means that the body will not accelerate; it will not change it's velocity.In order for the body to slow down to "floating speed", the drag force would have to be greater than the gravitational force. Drag force is dependent on velocity though, so the greater the velocity the greater the drag. Since the body is not accelerating at terminal velocity, it won't increase it's velocity, and therefore the drag force on it will not increase.(This is all assuming that is a rigid body in an atmosphere with a more or less uniform density, such as a block falling from an airplane.)
The downward force of gravity and the upward force of air resistance on a ball?
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How far up in the air do you have to be in order to fall for an hour?
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Does gravity pull things down 32.2 feet per second?
Absolutely Not.Gravity is NOT a pulling Force. Gravity is a "Pushing" Force of Mass Expansion.Earth Mass is Expanding at the Gravitational Acceleration rate of 9.808175174 m/s^2In order to understand you must first accept the Mathematics on EinsteinElectricitydotcom because Math does not lie. Then you can move on to EinsteinGravitydotcom.Acceleration due to gravityNo. There is a difference between speed (or velocity) and acceleration. They are, of course, related, but acceleration is the rate of change of velocity. When you are sitting in your car at a red light and the light turns green and you step on the gas (or accelerator!), your car accelerates from zero to some final velocity (hopefully not much more than the posted speed limit). Your speedometer clearly shows the change in velocity as the needle moves clockwise. The faster that needle moves, the greater the acceleration.On Earth, objects do not fall at constant speed, as your question suggests. Gravity accelerates objects toward the center of the Earth at 32.2 ft per second per second (which can also be written as 32 ft/s2). In other words, an object's velocity will increase by 32.2 ft/s (or 9.8 m/s) for each second the object falls until it reaches its terminal velocity, which you can think of as a kind of speed limit. Terminal velocity is reached when air friction equally opposes the force of gravity. Different objects will have different terminal velocities, depending upon their shapes.More discussionImagine you are on top of a tall building and holding a bowling ball over the side of the building. At time t = 0 seconds, you let go of the ball. At that exact moment, the ball is traveling at 0 ft/s, but as the ball experiences gravity without your holding it, it starts to fall. After one second, the ball will be traveling 32.2 ft/s. After two seconds, it is traveling 64.4 ft/s, and after three seconds, it is traveling at 96.6 ft/s.So you see that falling objects do not fall at the constant rate of 32.2 feet per second but actually accelerate -- that is, pick up speed -- at a rate of 32.2 feet per second per second.Note: The equation of rectilinear motion can be found at:Uh, Update: This article doesnt seem to mention "terminal velocity." Eventually, a falling bowling ball will not continue to pick up speed, it will reach Terminal Velocity, and stay at that speed. Terminal velocity is reached as the air resistance on a falling object approaches the momentum of the object. For example, as a bowling ball falls, gravity makes it accelerate at 32.2 feet per second. The bowling ball also hits air molecules, which slows it's acceleration. This is air resistance. As the bowling ball falls faster, more air molecules hit it per second. This is because the bowling ball travels a greater distance per second and passes through more air, and more air molecules. Eventually, the combined forces of all of the air molecules negate the acceleration of the bowling ball. At this point the bowling ball neither accelerates nor decelerates, it reaches an equilibrium. It will keep falling at a constant speed: its terminal velocity. If it were to somehow fall faster than its terminal velocity, the extra air molecules that hit it would actually slow it down until its terminal velocity was once again reached.An object's velocity, then, is determined both by its weight and its shape relative to the ground. If an object is small, like a bowling ball, it does not pass through many air molecules per second, and must travel faster to hit enough air molecules per second to reach terminal velocity. If an object's surface area is large, like a parachute, it does not need to be traveling as fast in order to hit enough air molecules per second. yep your right agree subscribe
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